Heater



' Nov. 19, 1940.` o. A.-LAW 2,222,537

HEATER Filed July so, 1937 2 sheets-sheet 1 Inventor A orneys Nov. 19,1940. .Q A LAW 2,222,537

HEATER Filed July 30, 1937 2 Sheets-Sheet 2 111 ,Il /l lll/1 InventorAttorneys Patented Nov. 19, 194() UNITED STATES usarse Grval A. Law,Roscoe, Ill. Application .ruiy so. 1937, serial No. 156,591

1 Cla/im.

advantages of the invention will become apparent to the reader of thefollowing specification.

In the drawings: Figure 1 represents a fragmentary side elevational viewof the engine portion of an automo bile with its parts broken away -toshow the heater installed.

Figure 2 is a top plan view of the radiator.

Figure 3 is a vertical sectional view through the boiler.

Figure 4 is a horizontal sectional View on line ftof Figure 3.

Referring to the drawings, wherein like numerals designate like parts,it can be seen in Figure 1 that the numeral 5 generally refers to theautomobile construction which includes the usual cowl wall B to therearward side of which is secured the radiator structure generallyreferred to by the numeral l'.

The numeral 8 generally refers to the boiler, while the numeral 9denotes the reservoir.

The exhaust manifold is denoted by the reference 9 and has the exhaustpipe lil extending therefrom. The boiler 8 is interposed betweenportions of the exhaust pipe IIJ and consists of the outer shell I I andthe internal shell I2 spaced from the shell II. This spacing of theshells is maintained through the use of upper and lower necks I3-I4extending from the internal shell I2, the outer ends of these necksIii-I4 being hanged as at I5 and these flanges overlaip the centralportions of the ends of the outer shell, the parts being suitablysecured together such as by welding. Threaded apertures are formed inthe anges of adjacent portions of the outer shell II for receivingscrews I5 which connect the flanges IB of the upper and lower portionsof the pipe I0 to the upper and lower ends of the boiler. Of course, thetwo spaced shells II and I2 form a dead-air space for insulating thechamber formed by the inner shell through which the exhaust gases passas they leave the upper portion of the pipe It to reach the lowerportion of said pipe.

Into the upper portion of the shell I2 extends the pipe line I6connecting to the vertical water coil Il in the shell I2. The lower endof this coil Il extends outwardly of the shell I2 and shell II to formthe line I'i to the reservoir 9. The lower portion of the reservoir 9 isof the hopper type, while the top is open .and a drain 10 cock I8 isprovided in the lower portion of the line II.

The radiator 'l is shown in` Figure 2 and consists of an elongated shellI9 supported by brackets 20 on the back board 2l located on the cowlwall 6. The pipe line Iii extends into the shell I5) and through thelongitudinal partition 24 therein which terminates in the shell I9 inspaced relation to one end thereof to allow .a by-pass 22.

The shell IQ is thus divided into the side with which the pipe line I5communicates and the side with which the return line 22 communicates,the line 22 extending to the top of the reservoir 9. A duct line 23extends from the radiator tothe reservoir 9 so that excessive steam fromthe radiator to the reservoir. This line 23 connects with the radiatorat a point adjacent the point where the inlet pipe IG discharges intothe radiator as will be seen in Figure 2. This pipe 23 extends upwardlyand then downwardly to form ya loop with its discharge end extendinginto the water in the reservoir. Thus, if an excessive amount of steamis formed at the inlet end of the radiator this steam will pass into thepipe 23 where practically all of the steam will be condensed as itenters the looped portion and this water of condensation will bereturned to the system, the hot water flowing through the radiator, ofcourse, returning to the reservoir through the pipe 22. This pipe 23,therefore, acts to remove steam or an excessive quantity of steam fromthe radiator and condenses the steam -so that the water in the systemwill not boil away as fast as it would if this pipe 23 is not used.

The shells I I and I2 can be formed in any suitable manner to permit theinsertion of the coil Il though I prefer to form the shells in sectionswhich will permit the coil to be put in place after which the sectionsof the shells are welded together.

While the foregoing specification sets forth the invention in specicterms, it is to be understood that numerous changes in the shape, size,and materials may be resorted to without departcan escape 2 ing from4,the spirit and scope of the invention as claimed hereinafter.

Having described the invention, what is claimed as new is:

A heating system for a motor vehicle comprising a boiler including aWater receiving coil, means for heating the coil by the products ofcombustion from the motor, an elevated Water containing reservoir, apipe connecting the lower end of the reservoir With an end of the coil,a radiator, an inlet pipe connecting the other end of the coil with theradiator, a third pipe connected with the radiator adjacent the pointWhere the inlet pipe delivers the fluid into the radiator and said thirdpipe extending upwardly to a point above the reservoir Where the pipe isformed with a loop, 5

with the pipe extending from the loop partinto the reservoir and belowthe Water level thereof and a return pipe connecting the radiator withthe .top of the reservoir.

oRvAL A7 LAW. 10

